Dominic Waters earned a spot on the Blazers summer league roster with his performance in four days of practice.Doug Beghtel/The Oregonian

Dominic Waters, a Portland native who has played professionally in Europe the last three seasons, earned a spot on the Trail Blazers roster for the Las Vegas Summer League.

Waters, who graduated from Grant High School and played his final two college seasons for Portland State, was one of four players invited to the Blazers' mini-training camp for summer league, held over four days at the team's Tualatin practice facility. He performed well enough in seven practice sessions to earn a spot on the Vegas roster.

Waters, 26, is a 6-foot-1, 180-pound guard who played for Hapoel Holon in Israel last season, when he averaged 12.4 points, 7.3 assists and 1.31 steals in 36 minutes.

He has also played in Slovenia and Belgium.

Waters was an all-state player at Grant in 2005 and played two seasons at the University of Hawaii before transferring to Portland State in 2007. After sitting out a year because of NCAA transfer rules, he was a second-team all-Big Sky Conference pick as a junior and senior.

The three other players brought in to the Blazers' summer league mini-camp were Garrett Sim, who played at Sunset High School and the University of Oregon; Lamont Jones, who played at Iona; and Charlie Westbrook, who played at South Dakota and has played professionally in Italy.